Representation from the Boardroom to the Courtroom

Ogborn Mihm Quaintance, Prof. LLC is a Sioux Falls, SD law firm for personal injury, business litigation, commmercial law and legal malpractice.

What We Do

We assess, prepare, and present each case individually based on its unique facts and
circumstances; there is no template for the personalized representation we provide.

Our office provides hope for seriously injured people. We have the experience and the fortitude to fight for our client’s wellbeing and rights. Because this takes time and resources, we limit our representation to those clients who have serious injuries from a collision that have a significant impact on a person’s life.
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The attorneys at OMQ Legal have decades of experience representing business clients in high-stakes commercial and contract litigation. Unlike many business litigation firms that are law and motion firms, settle, and never actually go to trial, we have substantial experience trying such business cases to juries and judges.
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We represent clients from the planning stages to the wind down of business entities and at all points between. Our entity clients include those formed in South Dakota and conducting business here and in other states and those formed elsewhere and seeking South Dakota representation.
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The legal malpractice attorneys at Ogborn Mihm Quaintance, Prof. LLC are among the most experienced in the United States at handling complex, hard-fought attorney professional liability cases.
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Our attorneys have attended to their construction clients’ needs including drafting contracts, litigating construction claims, prosecution of mechanics liens, identifying and negotiating scope of work disputes including change orders, calculating and litigating delay and acceleration claims, design defect claims as well as environmental issues such as mold, asbestos and mercury claims for almost a quarter-century.
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Who We Are

Our Legal Talent. Let Us Introduce You.

Melissa Winthers Melissa Winthers

Melissa Winthers

Of Counsel

Melissa Winthers represents injured clients who were hurt because of another’s negligence or intentional conduct. Melissa dedicates herself to understanding your unique needs following an injury including your medical and rehabilitation needs now and in the future, your financial needs resulting from work loss or diminished working capacity, and your personal and emotional needs. She understands that an injury affects not just you but your entire family, and she strives to tell your story and give you back your voice.

Melissa's Bio
John Quaintance John Quaintance

John Quaintance

Senior Lawyer

Born in Minnesota and raised in South Dakota, John attended the University of South Dakota, from which he received a B.A in Pre-Law History, before entering Law School at the University of Virginia. Concluding, after a year, that he belonged on the prairie, John transferred to the Law School at the University of South Dakota, graduating with Honors in 1972. John has practiced law from Sioux Falls continually since, interrupted only by a stint in the Army.

John's Bio
Rachel Hanisch Rachel Hanisch

Rachel Hanisch


Rachel Hanisch, who joined Quaintance Law Office P.C. in 2004, channels a penchant for just getting things done in her primary responsibility of oversight of the office’s substantial business entity practice, focusing not only upon statutory and other compliance but also upon a broad range of internal governance and succession issues and upon contracts and instruments related to the day to day business of the client.

Rachel's Bio
Mike Ogborn Mike Ogborn

Mike Ogborn

Senior Lawyer

Litigation can be brutal. Too often, individuals and businesses suffer needlessly because lawyers insist on doing things “the same old way.” Not with us. Not with Mike. Mike’s trademark is his relentless pursuit of new and better answers. His hallmark is the recognition that better answers come only with understanding. Not just surface familiarity, but a true appreciation of your world. Mike takes the time to listen, to answer questions, and to ask questions.

Mike's Bio
Murray Ogborn Murray Ogborn

Murray Ogborn

Senior Lawyer

Murray Ogborn is recognized as one of the nation’s preeminent trial lawyers, having represented clients and tried many cases across the country. He is an innovator in the development of trial practice, and is nationally known for using storytelling, case thematic techniques, and focus groups in the preparation and trial of cases. Murray not only personally tries cases, but other trial lawyers from around the country hire him to conduct focus groups and consult on their cases.

Murray's Bio
Nicole M. Quintana Nicole M. Quintana

Nicole M. Quintana


After distinguishing herself in law school with multiple awards and graduating with honors, Nicole has spent the better part of the last decade distinguishing herself as a trial lawyer and teacher of trial practice. She represents clients in high stakes business litigation, plaintiff’s legal malpractice, and catastrophic personal injury cases. Nicole understands the impact that litigation can have on a client’s life, and her advocacy for her clients is empowered by her empathy and passion for being a trial lawyer.

Nicole's Bio
Wiley Reynolds Wiley Reynolds

Wiley Reynolds


Wiley Reynolds joined Ogborn Mihm Quaintance in 2014, bringing with him a passion for effective writing and resolving complex legal issues. From conducting extensive research for complicated cases to guiding clients through the unfamiliar labyrinth of litigation, Wiley applies attention to detail and concern for clients’ needs to every aspect of his work in the litigation process.

Wiley's Bio
Elizabeth J. Hyatt Elizabeth J. Hyatt

Elizabeth J. Hyatt

Of Counsel

Betsy Hyatt focuses her trial practice on high-stakes business and legal malpractice litigation. She has been intimately involved in some of the most significant business cases in Colorado courts. She represents a wide array of clients, from individuals to international companies. Betsy has successfully tried bench and jury trials on behalf of entities and individuals. Her practice includes legal malpractice, business torts, fraud, fiduciary duties and contract dispute litigation.

Elizabeth's Bio
James E. Fogg James E. Fogg

James E. Fogg


James Fogg is a rising trial attorney who practices primarily in the areas of business, legal malpractice, personal injury, and trust and estate litigation. James recognizes that clients come to him because of problems that they cannot solve on their own and that every problem is unique. He prides himself on listening to his clients, developing a keen understanding of the issue, and crafting an approach that makes sense, both legally and financially.

James's Bio
Michael P. Cross Michael P. Cross

Michael P. Cross


Mike Cross understands he has two roles in every case. Whether it is a business dispute, construction litigation, or an insurance coverage claim, Mike zealously advocates for his clients while counseling them regarding the financial impact of litigation. Mike understands the effect litigation can have on a company and works with his clients to create an aggressive litigation strategy based on the client’s specific needs while always remaining cognizant of the bottom line.

Michael's Bio

Across the board, we are leaders in the legal community.


Let Us Help You or Your Company

Please reach out to speak with one of our lawyers. We are the Firm to depend on for advice as well as action. Contact us now for a confidential consultation about how we can help you.

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